diff --git a/pyproject.toml b/pyproject.toml
index da9c8bdd3..92a2ff556 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,7 +31,7 @@ pydantic = ["pydantic>=2.0.0,<3"]
 openai-agents = ["openai-agents>=0.17.1", "mcp>=1.9.4, <2"]
 google-adk = ["google-adk>=1.27.0,<2"]
 langgraph = ["langgraph>=1.1.0"]
-langsmith = ["langsmith>=0.7.34,<0.8"]
+langsmith = ["langsmith>=0.7.34,<0.9"]
 lambda-worker-otel = [
   "opentelemetry-api>=1.11.1,<2",
   "opentelemetry-sdk>=1.11.1,<2",
@@ -78,7 +78,7 @@ dev = [
   "pytest-xdist>=3.6,<4",
   "moto[s3,server]>=5",
   "langgraph>=1.1.0",
-  "langsmith>=0.7.34,<0.8",
+  "langsmith>=0.7.34,<0.9",
   "setuptools<82",
   "opentelemetry-exporter-otlp-proto-grpc>=1.11.1,<2",
   "opentelemetry-semantic-conventions>=0.40b0,<1",
diff --git a/uv.lock b/uv.lock
index b94b932d5..e8fe1e0f1 100644
--- a/uv.lock
+++ b/uv.lock
@@ -2559,7 +2559,7 @@ wheels = [
 
 [[package]]
 name = "langsmith"
-version = "0.7.38"
+version = "0.8.4"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "httpx" },
@@ -2572,9 +2572,9 @@ dependencies = [
     { name = "xxhash" },
     { name = "zstandard" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/af/c9/b3e54cfcb480876dfe33ecfdd64feeb621a86d9e6f4a6b9eb46851807018/langsmith-0.7.38.tar.gz", hash = "sha256:0db529b768d66c45f22fe959a0af7151342704fefafdecf3c60b14097c14fdb1", size = 4431914, upload-time = "2026-04-29T00:21:42.865Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/d4/e9/4ceeba766bae47de1a6ecdaa4024d10eff63eed936796b77005742399e8d/langsmith-0.8.4.tar.gz", hash = "sha256:989b387f6ff92ec5f9d14c0edb333e2579590cad5a1ca07042d924b0ec43cd10", size = 4460243, upload-time = "2026-05-13T21:00:59.338Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/86/bc/a19d0a6d5575c637796675831dbef3555568e84d913f14ec579f92162ffa/langsmith-0.7.38-py3-none-any.whl", hash = "sha256:9c400ad508c0e4edc37bd55987047c6b8aac36ddd55f6096e3806f4d6a100618", size = 392310, upload-time = "2026-04-29T00:21:40.534Z" },
+    { url = "https://files.pythonhosted.org/packages/db/94/8b872959ea529ecfbbe2c3f91d9ebf98cb8dbd9e3f7487bc134740d3d235/langsmith-0.8.4-py3-none-any.whl", hash = "sha256:4e334ab223d10129c9943c461d95fa9089523638ea29cd048045a7f99b973f50", size = 398701, upload-time = "2026-05-13T21:00:57.393Z" },
 ]
 
 [[package]]
@@ -5251,7 +5251,7 @@ requires-dist = [
     { name = "google-adk", marker = "extra == 'google-adk'", specifier = ">=1.27.0,<2" },
     { name = "grpcio", marker = "extra == 'grpc'", specifier = ">=1.48.2,<2" },
     { name = "langgraph", marker = "extra == 'langgraph'", specifier = ">=1.1.0" },
-    { name = "langsmith", marker = "extra == 'langsmith'", specifier = ">=0.7.34,<0.8" },
+    { name = "langsmith", marker = "extra == 'langsmith'", specifier = ">=0.7.34,<0.9" },
     { name = "mcp", marker = "extra == 'openai-agents'", specifier = ">=1.9.4,<2" },
     { name = "nexus-rpc", specifier = "==1.4.0" },
     { name = "openai-agents", marker = "extra == 'openai-agents'", specifier = ">=0.17.1" },
@@ -5280,7 +5280,7 @@ dev = [
     { name = "grpcio-tools", specifier = ">=1.48.2,<2" },
     { name = "httpx", specifier = ">=0.28.1" },
     { name = "langgraph", specifier = ">=1.1.0" },
-    { name = "langsmith", specifier = ">=0.7.34,<0.8" },
+    { name = "langsmith", specifier = ">=0.7.34,<0.9" },
     { name = "litellm", specifier = ">=1.83.0" },
     { name = "maturin", specifier = ">=1.8.2" },
     { name = "moto", extras = ["s3", "server"], specifier = ">=5" },